Plasmonically enhanced mid-IR light source based on tunable spectrally | Michael N
Summary :
We present a proof of concept for a spectrally selective thermal mid-IR source based on nanopatterned graphene (NPG). We solve the electrostatic problem of a conducting hyperboloid with an elliptical wormhole in the presence of an in-plane electric field. The localized surface plasmons (LSPs) in NPG allow for tuning of the thermal emission spectrum in the wavelength regime from λ=3 μm to 12 μm by adjusting the size of and distance between the circular holes in a hexagonal or square lattice structure. The LSPs along with an optical cavity increase the emittance from about 2.3% for pristine graphene to 80% for NPG, thereby outperforming state-of-the-art pristine graphene light sources operating in the near-infrared (NIR) by at least a factor of 100.
About Author :
Dr. Leuenberger is a Professor of Theoretical Condensed Matter Physics in the NanoScience Technology Center, Dept. of Physics, and College of Optics and Photonics at the University of Central Florida working in the fields of quantum optics, 3D and 2D semiconductor heterostructures, graphene, 3D topological insulators, and magnetic systems. Besides his strong track record in quantum information science (Nature, PRL, PRB, Nano Lett, etc.), he gained broad expertise in developing multiscale models of photodetectors, transistors, LEDs, and thermal emitters made of 2D materials including defects (Nature Comm., Scientific Reports, PRB, etc.).
